Polk Audio 255c-RT In Wall Speaker With Wafer Thin Sheer Grille (Each)

Polk Audio SKU: LS-3050
Polk Audio 255c-RT In Wall Speaker With  Wafer Thin Sheer Grille (Each) - K&B Audio
Polk Audio 255c-RT In Wall Speaker With  Wafer Thin Sheer Grille (Each) - K&B Audio
Polk Audio 255c-RT In Wall Speaker With  Wafer Thin Sheer Grille (Each) - K&B Audio

Polk Audio 255c-RT In Wall Speaker With Wafer Thin Sheer Grille (Each)

Polk Audio SKU: LS-3050
Regular price £277.99
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Because All the Action Happens Here, You Need a Powerful Centre Channel Speaker.

With a Vanishing Series in-wall centre channel speaker, you have the centre piece of a world-class stealth home theatre.

All you see is screen, and all you hear is crystal clear dialogue, dynamic detail and directional effects.

The Vanishing Series centre channel speaker anchors the action without attracting attention. It's the state-of-the-art in today's most-wanted interior design plans.


  • Vanishing Series RT speakers are timbre-matched to Polk RTi speakers to insure utterly seamless blending from speaker to speaker in systems that combine traditional and built-in speakers.
  • Superior imaging and clear, lifelike detail is revealed by the responsive silk dome tweeter in Vanishing RT speakers; it's set in a 15° swivel housing, for more direct high frequency control, excellent off-axis imaging and more placement flexibility.
  • Vanishing Series built-in speakers feature our exclusive wafer-thin Sheer-Grille™, a magnetically-secured grille that protrudes only 7mm from its surroundings. Sheer-Grilles have nearly transparent, ultra-small perfs, and are acoustically inert, for dynamic, unimpeded sound and more uniform coverage, even in larger rooms.
  • Painted to match your décor, Vanishing Series built-in speakers are virtually indistinguishable from their surroundings.
  • Reflective surfaces in rooms can make sound brighter and cause image distortion. Engaging the Vanishing reflective room compensation feature (by selecting the low setting) lowers the tweeter level to compensate for reflective surfaces. Vanishing reflective room compensation is a custom audio control that cuts the level only in the 4-5kHz range, exactly where reflectivity destroys sound quality. Outside this narrow 1kHz band, the tweeter retains its detailed and accurate high frequency response, for no loss of realistic musical details.
  • If positioning limitations demand that your loudspeakers be installed closer than 2 feet from side walls, the proximity of the surface can result in a response bump between 50 and 200Hz. This can create a ‘boomy' sound. The Vanishing wall distance toggle switch is a custom audio control that adjusts the crossover to flatten response and tune out boominess, without sacrificing deep bass response, for more lifelike sound and more flexible placement.
  • PowerPort® bass venting is Polk's patented design for smoothly transitioning the air flow from the port into your listening area, eliminating turbulence and distortion, for bigger, more efficient, deep bass impact.
  • Easy one-cut, drop-in installation puts built-in audio within reach, with Perfect Fit templates, a precision flange, and (available) pre-construction brackets; achieve secure, vibration-free efficiency with a simple turn of the patented Rotating Cam system.


Dimensions - Cut-Out Height 7 5/8 (19.37cm) "
Dimensions - Cut-Out Width 13 1/8 (33.34cm) "
Dimensions - Height 9 5/16 (23.65cm) "
Dimensions - Mounting Depth (includes 1/2 drywall)" 3 3/8 (8.57cm) "
Dimensions - Overall Depth 3 7/8 (9.84cm) "
Dimensions - Pre-Construction Bracket PB LCic
Dimensions - Product Weight (each) 6.6 pounds
Dimensions - Width 14 13/16 (37.62cm) "
Driver Complement Mid / Woofer - Diameter 5 1/4 (13.34cm) "
Driver Complement Mid / Woofer - Quantity 2
Driver Complement Mid / Woofer - Type Dynamic Balance mineral composite polypropylene cone with rubber surround
Driver Complement Tweeter - Diameter 1 (2.54cm) "
Driver Complement Tweeter - Quantity 1
Driver Complement Tweeter - Type Dynamic Balance silk polymer composite dome
Electrical - Efficiency 90 dB
Electrical - Inputs Gold-plated spring-loaded posts
Electrical - Lower -3dB Limit 50 Hz
Electrical - Nominal Impedance 8 ohms
Electrical - Recommended Amplifier Power 10-150 watts per channel
Electrical - Total Frequency Response 30Hz-27kHz
Electrical - Upper -3dB Limit 25 kHz
Shipping - Total Shipping Weight 8.98 pounds
Shipping - Unit of Measure each
Warranty - Speaker Warranty 5 Years
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